Boat.



PATENTED AUG. 21, 1906.

L. J BUTTERFIELD.

BOAT.

APPLIUATION FILED oc mo. 1905.

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No. 829,058. PATBNTED AUG. 21, 1906.

L. J, BUTTERPIBLD.

BOAT. 7 APPLICATION FILED OUT.30, 1905.

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N0. 829,058. PATENTED AUG. 21, 1906.

L. J. BUTTERFIELD.

BOAT.

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'UNITED STATES PATENT OFFICE.

LUTHER JAMES BUTTERFIELD, OF MILWAUKEE. WISCONSIN, ASSIGNOR TO JAMES A. ALEXANDER, OF MILWAUKEE, WISCONSIN.

BOAT.

Specification of Letters Patent.

Patented Aug. 21, 1906.

To all who? it may concern.-

Be it known that I, LUTHER JAMES BUT- TERFIELD, a citizen of the United States, residing at Milwaukee, in the county of Milwaukee and State of Wisconsin, have invented certain new and useful Im rovements in Boats; and I do declare the foflowing to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to improvements in boats and to the means for propelling the same.

The object of the invention is to provide a boat of simple, durable, and inexpensive c011- struction with an improved )ropelling mechanism which will be very efficient in operation.

With the above and other objects in view my invention consists of certain novel features of construction, combination, and arrangement of parts, as will be more fully described, and particularly pointed out in. the appended claims.

In the accompanying drawings, Figure 1 is a side elevation of a boat constructed in accordance with my invention. Fig. 2 is a top plan view of the same. Fig. 3 is a bottom plan view of the same. Fig. 4 is a vertical transverse sectional view. Fig. 5 is a side elev'ation of a slightly-modified form of the invention, and Fig. 6 is a vertical transverse sectional view taken on the line 6 6 in Fig. 5.

Referring to the drawings by numeral, 1 denotes the body or hull of my improved boat which has straight sides 2, that converge toward each other at the bow and stern, as shown at 3 4. Upon the top of the sides 2 is secured a deck 4, which has a surrounding rail or gunwale 5. A straight keel 6 is secured centrally upon the under side of the bull or body 1 and is formed in its upper edge with a series of substantially semicircular openings 7. The latter aline with a series of wells 8, formed in the hull between the sides 2, which latter are spaced apart by vertical walls 9, which divide the interior of said hull into said wells. The latter are shown as being open; but it will be understood that they may be closed by a flooring or removable covers.

In each of the wells 8 is mounted a propeller or paddle wheel 10, which is in the form of a hollow airtight cylinder. These cylinders are revolubly mounted by journaling their shafts 11 in bearings 12, .rovided upon the bottoms of the sides 2, as shown in Fig. 4 of the drawings. Upon the peripheries of said cylinders 10 are provided .V-shaped blades 13, which are preferably four in numher and are mounted as shown at 14. The propellers are so disposed that their upper alves are in the wells 8 and their lower halves project into the openings 7 in the keel.

The means for operating the ropellers or paddle-wheels 1.0 comprises cran s 15, which are secured upon the ends of ihc shafts 11 and are connected on each side of the boat by connecting-rods 16. The latter are loosely connected, as shown at 17, to the lower ends of pitman-rods 18, which project through slots or openings 19, formed in the deck 4 of the boat. The upper ends of the pitmanrods 18 are connected to right-angularly-disposed cranks 19 20, provided upon a shaft 22, which is journalcd in bearings 23 upon uprights 24, arising from the deck 4". As shown, the cranks are formed by bending the ends of the shaft 22, and the central portion of said shaft is bent to form a crank portion 25, by means of which the propellers are operated. The shaft 22 may be turned in any desired manner. Any suitable guards may be provided around the slots 19 on top of the deck 4, and suitable guards may also be provided around the cranks l5 and their connecting-rods 16 on the outside of the boat.

The form of the invention shown in Figs. and 6 of the drawings is very similar to that just described, the only difference being in the means for driving the propellers. As here shown, sprocket-wheels 30 are substituted for the cranks 15 on the shafts of the propellers, and said sprocket-wheels are connected by sprocket-chains 31. The shaft of the foremost propeller is provided with an extra sprocket-wheel 32, which is connected by a sproket-chain 33 to a sprocket-wheel 34, mounted u )on a drive-shaft 35, which corresponds to t 1c shaft 22 previously described. The shaft 35 is mounted in suitable bearings upon the deck of the boat, and the sprocketchain 32 extends through openings formed in the latter, as clearly shown in Fig. 6.

From the foregoing description, taken in connection with the accompanying drawings, the construction and operation of the invcntion will be readily understood without requiring a more extended ex )lanation.

Various changes in the lorin, proportion, and the minor details of construction may be resorted to without departing from the principle or sacrificing any of the advantages of this invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent,

1. A boat coin )rising a hull having wells formed therein, a keel upon said boat having recesses in alinement with said wells, cylinders mounted in said wells and recesses, blades upon said cylinders, cranks upon the outer ends of the shafts of said cylinders, a rod connecting said cranks, an operating crank-shaft, and a pitman connecting the latter and said connecting-rod, substantially as described.

2. A boat comprising a straight body having tapered ends and a longitudinal series of wells, a keel upon the bottom of said hull having recesses to aline with said wells, an overhanging deck upon the top of said hull and formed with slots, hollow cylinders journaled in said wells and said recesses, V- shaped blades upon the peripheries of said. cylinders, cranks upon the ends of the shafts of said cylinders, rods connecting said cranks on each side of said hull, a crank-shaft mounted above said deck, and pitman-rods projecting through the slots in said deck and having their lower ends loosely connected to said connecting-rods and their upper ends connected to the cranks of said operating crank-shaft, substantially as described.

3. A boat con'iprising a straight body or hull having tapered ends and a longitudinal series of Wells, a keel upon said hull having recesses formed therein to aline with said wells, an overhanging deck u on said hull and formed with openii'igs, ho low cylinders iournaled in said wells and said recesses, blades upon the peripheries'of said cylinders, a drive-shaft mounted upon said deck, rotary elements upon said shaft and shafts of said cylinders, and driving connections between said rotary elements, substantially as described.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

LUTHER J A M BS BU'ITERF] EDD.

Witnesses M. L. SIMPSON, GERALD L. MULLANEY. 

